Model 605 Rack Piston, Valve & Worm

Fig. 14 Valve & worm disassembled. Model 605:

Fig. 15 Spool valve assembly. Model 605:

Fig. 21 Stub shaft installation. Model 605:

1. To assemble spool valve proceed as follows:
a. Install three teflon & three O-ring seals on spool.
b. Lubricate spool with power steering fluid, then rotate spool while installing.
c. Install stub shaft into valve body.Notch must fully engage pin and cap must seat against shoulder.
2. Assemble worm shaft on valve. Install snap ring with "curved-in end" on same side as access hole.

Fig. 13 Valve & worm removed from rack.Model 605:

Fig. 22 Installing valve & worm into rack.Model 605:

Fig. 23 Stub shaft & rack positioning. Model 605:

3. To install valve and worm in rack:
a. Install teflon ring and O-ring seal.
b. Hold rack teeth and worm drive pin in position.
c. With light pressure to hold worm thread against piston, turn worm and valve counter-clockwise slowly until one click is felt, then turn clockwise to complete assembly.
d. Check relation of stub shaft and rack piston by threading worm and valve into rack piston until valve face and rack piston face are flush. Flats on stub shaft and piston must be parallel. If not parallel, disassemble and repeat steps b and c.